Pneumatic-tired vehicle.



Patented Sept. Il, |900.

J. M. WULBRECHT. PNEUMATIC TIRED VEHICLE.

(Application filed Nov. 22, 1899.)

.,No Model.)

@Houma-1- Wilma/om a bicycle-frame.

Unttrnp STATES PATENT Ormea... l

JOHN M. VOLBREOHT, OF LOS ANGELES, CALIFORNIA.

PNEVVUMTIC-TIRED VEHICLE.

SPECIFICATION forming part of Letters Patent No. 657,845, dated September'll, 1900. Application filed November Z2, 1899. Serial No. 737,938. (No model.)

T0 all whom, it' may concern/:

Be it known that I, JOHN M. WOLBRECHT, a citizen ofthe United Stat-es, residing at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Pneumatic-Tired Vehicles; and I do herebydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itk appertains to make and use the same.

This invention relates to new and useful improvements in velocipedes and other pneumalicstired vehicles; and its objects, among other things, are to provide a combined frame and reservoir designed to hold compressed air, to provide said frame with a pump adapted to be operated by the Vibrator-y motions of the saddle or seat'of the velocipede or vehicle, and to provide means for utilizing the compressed air for intlating, signaling, dac.

To these ends the invention consists in the novel construction and combination of parts hereinafter more fullydescribed and claimed, and illustrated in the accompanying drawings, showing the preferred form of my invention, and in which- Figure l is a section through a portion of Fig. 2 is a detail View of the pump. Fig. 3 is a detail view of a modification.

Referring to said figures by letters of reference, A is the frame, formed ofsuitable tubing, one or more sections of which comm unicate through air-tight passages with the central tube or brace B of the frame.

Within the tube B is secured a tubular saddle-post C of peculiar constructiomwhich may be adjusted vertically in the usual manner and held in position by means of a clamp b. This post O is closed at its lower end by a valve C', adapted to prevent the escape of air therethrough from the tube B. The lower portion of the walls of the post are preferably thickened, as at O2, and a washer or partition crests upon the shoulders formed thereby. rlhis washer c serves as a bearing for one end of a spring D,'whioh is mounted upon a tube E, detachably secured at its upper end to a hollow L-shaped seat bar F, which is slidably mounted Within the post O. The spring D bears against the lower end of the L-shaped bar and serves to retain the same normally removed from the washer c. The tube E projects through the washer c into the chamber c', formed in the bottom of the post O, and is provided with a piston E', within which is a valve e, as shown.

The. upper end of the post O is preferably threaded and engages with a nut, as G, which can be adjusted vertically upon the post for the purpose hereinafter described.

A valve H is preferably placed within the frame at the base of the tube B and is so constructed as to be opened when a tube is secured thereto. One way to secure this result is to form the stem h of the valve of such length as to come into contact with the nipple of the tube when the latter is placed upon the valve, thereby being forced inward. At any other suitable point in the frame, preferably at the forward end of the upper horizontal bar B thereof, is secured another valve I, operated in any suitable manner, as by a rod I'.

A whistle J communicates with the valve I and is adapted to be sounded when valve I is opened.

From the foregoing description it will be seen that the jarring and the resulting vibration of the seat or saddle will causethe seatbar to move vertically within the post O, the spring D serving to cushion the same, as is obvious. When the seat-bar and its piston are forced downward, the air within chamber c will be forced through valve O into the tubes of the frame, and upon the rebound or upward movement of said seat-post air will be admitted thereto and will enter the chamber c through valve e of the piston E. This air or a portion of it will then be forced into the tubes of the frame upon the neXt downward motion of the saddle.

By regulating the length of the stroke of piston E the pressure within the frame can also be regulated, as is obvious. I therefore in order to keep the pressure below the danger-point preferably so locate the top of the post O as to limit the stroke of the seat-bar to the proper length; but the stroke may, if desired, be regulated by means of the nut G, which is mounted upon the post O.

IOO

joint.

While I have shown and described thisde-V ploying the spring of "the seat of the saddle. i

Such a construction is show-n in Fig. 3 of the drawings, which shows the piston rod or tube K [,)rojecting upward through the seat-,post and contacting-with the underv surface of the saddle-seat. The length of the stroke of this pistoncan also be regulated in any suitable manner, as by rmeans of a nut K', adj'ustably mounted thereon.

It will of course be understood that the join-ts between the. tubing and the frame of lthe velocipede must be perfectlyl air-tight,

and this result may be secured with any/snitM able means, preferably by brazing or forging the parts upon a small tube L, inserted in the vice as applied. to a velocipede` it is o byious that the same. can be used iny connection with any vibrat ory seat and is. therefore. adaptable to automobiles and rubber-.tired Vehiclesoif all descriptions, a suitable reservoirl being substituted for the ltubing-o" a vel'ocipede.

In the foregoing description I have shown the'preferred form of my invention; but` I do not limit myself thereto, as I am aware that modifications maybe made therein without departing from the spirit of my invention and the same yet remain intact and beprotected.

Having thus fully described my invention,

what I claim, and desire to secure by Letters Patent, is-

l. In a vehicle of the character described, the combination of a hollow post applied to the hollow vehicle-frame and having` a valved chamber at its lower end, a hollow sliding 1 seat-bartelescoping said post and having connected to its lower end a diametrically-reduced tubular rod carrying a valved piston arranged in said valved cha1nber,and a springsupport for said seat-bar, substantially as set forth.

2. In a vehicle-of the character described, a combined pump and saddle-post comprising a post having a chamber at the lower end thereof witha valved'ou tlet therefrom, a seatbar slidably mounted within the postabove the, cham-ber, a valved piston having a hollow rod... connection with said seat'- bar and ar ranged withiny said chamber, and a springsupport forsaid seat-bar arranged intermediat'ely of said chamber and seatbar, snbstantially as described.

3. In a device of the character described, the combination of a reservoir having a I valved air-outlet, a combined saddle-,support f and pumpcompr-ising a vertically-adjustable post having a chamber in its lower end provided with ay valved outlet, a hollow seat-bar arranged to slide in said hollowl post, a valved piston arranged in said chamber and having va detachable rod connection with said seaty bar within `said post, and means to el'ect the adjustment ot? theilength of the stroke of said 1 piston, substantially asset forth.

In, testimony whereof I affix my signature inA presence of two. witnesses.

JOHNv M. WOLBRECH'F.

Witnesses:

E. J. ENSIGN, I. W. HATHEWAY. 

